kmx.io/cl-debug/debug.lisp

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• Hash : eb901c04
  Author :
  Date : 2014-01-07T11:42:27
  

  Cross-package debug facility for Common Lisp.

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• debug.lisp

• ;;
  ;;  CL-DEBUG
  ;;
  ;;  Copyright 2014 LowH <code@lowh.net>
  ;;
  ;;  Permission to use, copy, modify, and distribute this software for any
  ;;  purpose with or without fee is hereby granted, provided that the above
  ;;  copyright notice and this permission notice appear in all copies.
  ;;
  ;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  ;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  ;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  ;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  ;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  ;;
  
  (in-package :cl-user)
  
  (defpackage :cl-debug
    (:nicknames :debug)
    (:use :cl)
    (:export
     #:debug-p))
  
  (in-package :cl-debug)
  
  (defvar *debug* nil)
  
  (defmacro debug-p (what)
    (labels ((walk (x)
  	     (etypecase x
  	       (cons `(,(car x) ,@(mapcar #'walk (cdr x))))
  	       (keyword `(find ,x *debug*))
  	       (symbol `(find ',x *debug*)))))
      (walk what)))
  
  (defsetf debug-p (what) (value)
    `(progn (if ,value
  	      (pushnew ,what *debug*)
  	      (setq *debug* (remove ,what *debug*)))
  	  ,value))
  
  (debug-p (or (and :macros :xor) :lisp :lol))
  
  (setf (debug-p :lol) nil)
  

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